hanna alkalinity checker

  1. C

    New Jersey Testing Drygoods SOLD Alkalinity checker HI772 Hanna tester with extra reagent $50

    Alkalinity checker HI772 Hanna tester with extra reagent $50. Will ship with payapl.
  2. AbjectMaelstroM

    3D Printed Test Kit Organizers (Hanna, Salifert, Red Sea)

    This thread is for the general discussion of the classified ad 3D Printed Test Kit Organizers (Hanna, Salifert, Red Sea). For more information about this item, please click the link or ask a question in this thread. Please add to the discussion here.
  3. Lasse

    Important findings according how to store open bottles of the reagent for Hanna Marine alkalinity checkers

    There is a way to hinder the Hanna alk to show lesser and lesser dKH (or ppm for that matter) with age of open reagent bottle. I had the same story as many have reported here - my reading decrease from a new open bottle with time. Double check with another method show that there was not a real...
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